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Cooling channel cover and piston provided with cooling channel cover

A cooling channel and cover technology, applied in the direction of piston, liquid cooling, engine cooling, etc., can solve problems such as reducing the cooling effect of cooling oil, and achieve the effects of increasing strength, low quality, and reducing wear and tear

Inactive Publication Date: 2018-05-18
MAHLE INT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, at least one joint gap causes an uncontrolled discharge of cooling oil from the cooling channel, as a result, reducing the cooling effect of the cooling oil

Method used

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  • Cooling channel cover and piston provided with cooling channel cover
  • Cooling channel cover and piston provided with cooling channel cover
  • Cooling channel cover and piston provided with cooling channel cover

Examples

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Embodiment Construction

[0023] figure 1 Piston 10 is shown by way of example. The piston 10 is designed as a box piston and has a piston head 11 which contains a piston crown 12 in which a combustion bowl 13 is formed. Furthermore, the piston head 11 has a fire groove 14 and an annulus 15 with a ring groove for receiving a piston ring (not shown). At the level of the annulus 15 , the piston is provided with a circumferential cooling channel 16 which opens towards the bottom and is closed by means of a cooling channel cover 30 . Furthermore, in a manner known per se, the piston has a piston skirt 17 containing a piston pin seat 18 provided with a pin seat bore 19 for receiving a piston pin (not shown). The piston pin seats 18 are connected to one another in a manner known per se via a running surface 21 which is thermally decoupled from the piston head 11 by means of a groove 22 .

[0024] figure 2 A first exemplary embodiment of an annular cooling channel cover 30 suitable for use in the present...

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PUM

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Abstract

An annular cooling channel cover for a piston may include an elastic material body having opposing end faces. At least two opposing end regions may provide a joint gap and at least one feed element for a coolant may be received in at least one opening disposed in the cooling channel cover. The feed element may include an inlet region and an outlet region, and may be held on the cooling channel cover via a clip-on latching connection. Spring clips may be disposed on the inlet region of the feed element, and / or latching elements may be disposed on the outlet region of the feed element. The spring clips may engage one of the end faces and the latching elements may engage the opposing end face. A closure element may engage into the joint gap to close the same.

Description

technical field [0001] The invention relates to an annular cooling channel cover for a piston of an internal combustion engine, which is made of an elastic material and has two opposite end faces, at least the two opposite end regions forming a seam gap, at least one feed element for cooling oil, the feed element having an inlet area and an outlet area, which are received in openings provided in the cooling channel cover and held on the cooling channel cover by means of a snap connection . Furthermore, the invention relates to a piston provided with a cooling channel cover of this type. Background technique [0002] A cooling channel cover of the general type is known from EP1238191B1. The known cooling channel cover has an inherently elastic feed element which is received in an opening provided in the cooling channel cover and is fastened thereto by means of a snap connection or by means of clamping. For installation purposes, it is known that the feed element is elastic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02F3/22
CPCF02F3/22F01P3/10
Inventor 萨沙-奥利弗·布泽克赖纳·夏普蒂莫·林克
Owner MAHLE INT GMBH
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